CN212744906U - Pin structure for automobile tensioner - Google Patents
Pin structure for automobile tensioner Download PDFInfo
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- CN212744906U CN212744906U CN202021702833.XU CN202021702833U CN212744906U CN 212744906 U CN212744906 U CN 212744906U CN 202021702833 U CN202021702833 U CN 202021702833U CN 212744906 U CN212744906 U CN 212744906U
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- chamfer
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- plunger
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Abstract
The utility model discloses a pin structure for automobile tensioner, including interconnect's plunger and interior plug (2), be equipped with the first hole body (101) and the second hole body (102) of intercommunication each other in the plunger, the plunger includes interconnect's cylinder (1) and gag cap (3), and first hole body (101) and second hole body (102) distribute about and in cylinder (1) inboard and communicate each other with the outside, and gag cap (3) are connected at the cylinder (1) one end that is close to first hole body (101); first hole body (101) and second hole body (102) are equipped with first chamfer (4) in the junction, first hole body (101) are being kept away from first chamfer (4) one end and are being equipped with second chamfer (5), and second hole body (102) are being kept away from first chamfer (4) one end and are being equipped with third chamfer (6). The utility model has the characteristics of convenient processing, production efficiency are high.
Description
Technical Field
The utility model relates to an automobile tensioning ware, especially a column pin structure for automobile tensioning ware.
Background
At present, a hydraulic chain automatic tensioner of an automobile engine mainly comprises a one-way valve, a plunger, an inner screw plug, a chain guide plate, a plunger shaft and a return spring, and the chain is tensioned through linkage of all parts in the tensioner. The plunger structure in the tensioner consists of a cylinder, a step hole and a blind hole, wherein the step hole and the blind hole are positioned in the cylinder, and the step hole is positioned outside the blind hole and has an inner diameter smaller than that of the blind hole. The conventional processing mode of the structure is that after one side of a blank is drilled, a turning tool enters from the position of an opening and performs reaming on the inner side of the blank, so that the inner side blind hole is processed. The machining mode has the problems of high machining difficulty and high machining cost, and the lathe tool needs to finish the reaming for multiple times, so that the machining efficiency of the plunger is further reduced. Therefore, the existing tensioner pin structure has the problems of difficult processing and low production efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an automobile is pin structure for overspeed tensioner. It has the characteristics of convenient processing and high production efficiency.
The technical scheme of the utility model: car is pin structure for tensioning ware, including interconnect's plunger and interior plug, be equipped with the first hole body and the second hole body of mutual intercommunication in the plunger, the inboard of interior plug screw is equipped with cavity and oilhole, its characterized in that communicate each other: the plunger comprises a cylinder and a plug cap which are connected with each other, the first hole body and the second hole body are vertically distributed on the inner side of the cylinder and are communicated with the outside, and the plug cap is connected to one end of the cylinder close to the first hole body; the first hole body and the second hole body are provided with a first chamfer at the joint, the first hole body is provided with a second chamfer at the end far away from the first chamfer, and the second hole body is provided with a third chamfer at the end far away from the first chamfer.
In the above stud structure for an automobile tensioner, the inner side of the second hole body is connected with the inner plug screw in a threaded manner.
In the above stud structure for an automobile tensioner, an end of the inner plug screw extends into the first hole body through the second hole body.
In the pin structure for the automobile tensioner, the slopes of the first chamfer, the second chamfer and the third chamfer are the same, and the height of the third chamfer is the sum of the heights of the first chamfer and the second chamfer.
In the pin structure for the automobile tensioner, the plug cap penetrates through the second chamfer to be buckled with the cylinder, and a blind hole is formed in one side, close to the cylinder, of the plug cap.
Compared with the prior art, the plunger piston is formed by buckling and connecting the split cylinder body and the plug cap, so that the first hole body and the second hole body in the plunger piston can be changed into through hole structures from original blind holes, and the plunger piston can be directly manufactured by stamping without adopting a traditional turning mode, thereby effectively reducing the processing difficulty of the first hole body and the second hole body and improving the processing efficiency of the plunger piston; through the structural optimization of the first chamfer, the second chamfer and the third chamfer, on one hand, the connection stability among the plug cap, the inner screw plug and the plunger can be improved, and the connection stability reduction caused by burrs or dimensional deviation of the plunger at the end angle position is avoided; on the other hand, the height matching of the first chamfer and the second chamfer can enable a manufacturer to directly punch from the middle position of the chamfer during punch forming, so that a structure similar to a third chamfer forms a first chamfer and a second chamfer which are separated from each other after punching, and the processing efficiency of the manufacturer on the first chamfer is effectively improved; the blind hole on one side of the plug cap can lead the plug cap to contract and deform inwards when being buckled, thereby improving the buckling stability and the connection strength of the plug cap. Therefore, the utility model has the characteristics of convenient processing, production efficiency are high.
Drawings
FIG. 1 is a connecting structure diagram of the present invention;
FIG. 2 is a schematic view of the structure of the column;
fig. 3 is a schematic structural view of a conventional plunger.
The labels in the figures are: 1-column body, 2-inner screw plug, 3-plug cap, 4-first chamfer, 5-second chamfer, 6-third chamfer, 101-first hole body, 102-second hole body and 301-blind hole.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
Examples are given. Car is pin structure for tensioning ware, constitute as shown in figure 1, including interconnect's plunger and interior screw 2, be equipped with the first hole body 101 and the second hole body 102 of intercommunication each other in the plunger, the internal diameter of first hole body 101 is greater than second hole body 102, its characterized in that: the plunger comprises a cylinder 1 and a plug cap 3 which are connected with each other, a first hole body 101 and a second hole body 102 are vertically distributed on the inner side of the cylinder 1 and are communicated with the outside, and the plug cap 3 is connected to one end of the cylinder 1 close to the first hole body 101; the first hole body 101 and the second hole body 102 are provided with a first chamfer 4 at the joint, the first hole body 101 is provided with a second chamfer 5 at the end far away from the first chamfer 4, and the second hole body 102 is provided with a third chamfer 6 at the end far away from the first chamfer 4.
The inner side of the second hole body 102 is connected with the inner screw plug 2 in a threaded mode.
The end of the inner plug 2 extends through the second bore 102 into the first bore 101.
The slopes of the first chamfer 4, the second chamfer 5 and the third chamfer 6 are the same, and the height of the third chamfer 6 is the sum of the heights of the first chamfer 4 and the second chamfer 5.
The plug cap 3 penetrates through the second chamfer 5 to be buckled with the cylinder 1, and a blind hole 301 is formed in one side, close to the cylinder 1, of the plug cap 3.
The utility model discloses a theory of operation: the utility model discloses adding man-hour to the plunger, can make 1 both ends of cylinder form the notch that has the inclined plane through the punching press earlier, then carry out the secondary punching press from both ends, make its both sides notch form first hole body 101 and second hole body 102 after the punching press. When the notch on one side of the first hole body 101 is punched, the punching rod can punch from the middle part of the inclined surface of the notch, so that the front end of the inclined surface can go deep into the inner side of the column body 1 after punching, the front end of the inclined surface forms a first chamfer 4, and the rear end of the inclined surface which is not punched forms a second chamfer 5; the notch inclined plane that is located second hole body 102 one side simultaneously forms third chamfer 6, promptly the utility model discloses a to the configuration optimization of plunger, make it need not lathe work, only just can reach the processing to hole body and chamfer through the punching press, it is right to effectively improve the utility model discloses a machining efficiency. Stopper cap 3 is at 1 tip of cylinder through the direct lock of second chamfer 5 after the processing, can effectively improve the lock stability of stopper cap 3 through second chamfer 5 to cooperation blind hole 301 makes and to be able to pass through interference fit between stopper cap 3 and the first hole body 101, thereby improves the joint strength of stopper cap 3. After the plug cap 3 is connected, the second hole body 102 and the inner screw plug 2 are respectively threaded, and then the inner screw plug 2 is connected with the cylinder 1 through threads, so that the processing and the assembly of the tensioner pin structure can be realized.
Claims (5)
1. Car is pin structure for tensioning ware, including interconnect's plunger and interior screw plug (2), be equipped with first hole body (101) and the second hole body (102) that communicate each other in the plunger, its characterized in that: the plunger comprises a cylinder (1) and a plug cap (3) which are connected with each other, the first hole body (101) and the second hole body (102) are vertically distributed on the inner side of the cylinder (1) and are communicated with the outside, and the plug cap (3) is connected to one end of the cylinder (1) close to the first hole body (101); first hole body (101) and second hole body (102) are equipped with first chamfer (4) in the junction, first hole body (101) are being kept away from first chamfer (4) one end and are being equipped with second chamfer (5), and second hole body (102) are being kept away from first chamfer (4) one end and are being equipped with third chamfer (6).
2. The stud structure for an automotive tensioner according to claim 1, characterized in that: the inner side of the second hole body (102) is in threaded connection with an inner plug screw (2).
3. The stud structure for an automotive tensioner according to claim 1, characterized in that: the end part of the inner screw plug (2) penetrates through the second hole body (102) to extend into the first hole body (101).
4. The stud structure for an automotive tensioner according to claim 1, characterized in that: the inclination of the first chamfer (4), the inclination of the second chamfer (5) are the same as the inclination of the third chamfer (6), and the height of the third chamfer (6) is the sum of the heights of the first chamfer (4) and the second chamfer (5).
5. The stud structure for an automotive tensioner according to claim 4, characterized in that: the plug cap (3) penetrates through the second chamfer (5) to be buckled with the cylinder (1) mutually, and a blind hole (301) is formed in one side, close to the cylinder (1), of the plug cap (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021702833.XU CN212744906U (en) | 2020-08-14 | 2020-08-14 | Pin structure for automobile tensioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021702833.XU CN212744906U (en) | 2020-08-14 | 2020-08-14 | Pin structure for automobile tensioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212744906U true CN212744906U (en) | 2021-03-19 |
Family
ID=74988789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021702833.XU Active CN212744906U (en) | 2020-08-14 | 2020-08-14 | Pin structure for automobile tensioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212744906U (en) |
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2020
- 2020-08-14 CN CN202021702833.XU patent/CN212744906U/en active Active
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